KEB F4.S3D-3420 07.F4.S3D-3420/1.2

KEB COMBIVERT F4 Frequency Inverter, 0.75kW

Description

This is a KEB COMBIVERT F4 frequency inverter, model 07.F4.S3D-3420/1.2, designed for precise and efficient control of three-phase AC motors. With a power rating of 0.75 kW, it is an ideal solution for a wide range of industrial applications requiring variable speed control. This drive is known for its robustness and reliability, engineered in Germany by KEB Automation.

Specifications

• Manufacturer: KEB
• Series: COMBIVERT F4
• Model: F4.S3D-3420
• Article Number: 07.F4.S3D-3420/1.2
• Input Voltage: 3-phase 380V to 480V AC
• Input Frequency: 50/60 Hz
• Input Current: 2.8 A
• Output Voltage: 3-phase 0V to Input Voltage
• Output Current: 2.6 A
• Output Power: 0.75 kW (1.8 kVA)
• Output Frequency: 0 to 409 Hz

Application

Suitable for applications such as pumps, fans, conveyors, mixers, and general machine building where variable speed motor control is necessary. The F4 series is a workhorse for maintaining older production lines.

Country of Origin

Made in Germany.

CO2 Impact

By purchasing this pre-owned inverter, you help avoid the emission of approximately 100 kg of CO2 associated with the production of a new unit. This saving is comparable to driving a car for 500 kilometers.

Availability

This is an obsolete item, but it is available from our stock as a spare part. Ideal for repairs and maintenance to avoid costly system upgrades. Order now from spareparts2day for expert support and fast delivery.

FAQ

Question?

Is the KEB COMBIVERT F4 series still supported with software or spare parts by the manufacturer?

Question?

The F4 series is obsolete and no longer actively supported by KEB. Support is limited, and users are typically advised to migrate to modern series like the F6 or S6 for new projects or critical replacements.

Question?

Can this 07.F4.S3D-3420 inverter be used for a 1.1kW motor?

Question?

No, this inverter is rated for a 750W (0.75kW) motor. Using it with a higher-rated motor like 1.1kW would overload the drive, leading to faults, overheating, and potential damage. Always match the inverter’s power rating to the motor’s specifications.

Question?

What type of braking resistor is required for this drive in dynamic braking applications?

Question?

The specific braking resistor depends on the application’s duty cycle and braking torque requirements. You would need to consult the original KEB F4 series technical manual for the correct resistance (Ohm) and power (Watt) values compatible with the 07.F4.S3D-3420 model.

Friday, March 13, 2026

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